AENOR UNE-EN ISO 8968-4:2016 牛奶和乳制品 氮含量的測定 第4部分:蛋白質(zhì)和非蛋白質(zhì)氮含量的測定及真實蛋白質(zhì)含量的計算(參考方法) (ISO 8968-4:2016)
Milk and dairy products. Determination of nitrogen content. Part 4: Determination of protein and non-protein nitrogen content and calculation of true protein content (Reference method). (ISO 8968-4:2016)